`s e c h^(- 1)(sintheta)=`

Prove the following identity: (t a ntheta+s e ctheta-1)/(t a ntheta-s e ctheta+1)=(1+sintheta)/(costheta)

Prove: (cos e c\ theta+sintheta)(cos e c\ theta-sintheta)=cot^2theta+cos^2theta

(cos e c\ theta-sintheta)(sectheta-costheta)(tantheta+cottheta) is equal (a) 0 (b) 1 (c) -1 (d) None of these

Prove the following identities: (sintheta)/(cottheta+cos e ctheta)=2+(sintheta)/(cottheta-cos e ctheta)

Prove: (cos^2theta)/(sintheta)-cos e c\ theta+sintheta=0

Prove the following identity: cos e c\ theta(s e ctheta-1)-cottheta(1-costheta)=t a ntheta-sintheta

Which of the following is incorrect? a. sintheta=-1//5 b. costheta=1 c. s e ctheta=1//2 d. t a ntheta=1

(sintheta)/(1-cottheta)+(costheta)/(1-tantheta) is equal to (a) 0 (b) 1 (c) sintheta+costheta (d) sintheta-costheta

Find (dy)/(dx), when x=a e^(theta)(sintheta-costheta),y=a e^(theta)(sintheta+costheta)

Prove the following {(1-sintheta) /costheta}^2=(1-sintheta) /(1+sintheta)